Waukesha, WI – April 3, 2014 — Allison Transmission, Inc. has globally endorsed the use of 2000, 3000 and 4000 Series™ transmissions with the Odyne hybrid electric system as the exclusively-approved PTO-based hybrid system.

In 2011, Odyne introduced an innovative plug-in hybrid power system which interfaces with the Allison family of commercial vehicle transmissions. In July of 2012, Allison Transmission invested in a non-controlling equity stake in Odyne Systems, LLC. The initial relationship related to hybrid systems for the 2000 Series Allison transmission, which was now expanded to include the 3000 and 4000 Series Allison transmissions at the completion of design reviews for those products.

Joe Dalum, President of Odyne Systems, commented, “Odyne is very pleased that Allison Transmission, the world’s largest manufacturer of fully automatic transmissions for medium- and heavy- duty commercial vehicles, has endorsed and recognized Odyne globally. This relationship opens a very large addressable market for our company. Our system was specifically designed to provide strong increases in fuel efficiency and reductions in overall emissions while preserving the Allison transmission warranty. When combined with the superior performance of Allison transmissions, the Odyne system provides unmatched advantages that help companies and communities meet sustainability objectives, lower costs and reduce work site noise.”

The Odyne hybrid power system features proprietary and patented hybrid technology combining reliable electric power conversion, power control and energy storage technology. The system interfaces with Allison Transmission’s industry leading fully-automatic transmissions.

Hybrid energy is captured using Remy advanced electric propulsion motors with industry leading power density and efficiency, Johnson Controls lithium-ion battery technology and other robust, automotive quality components. The unique PTO interface provides a direct connection between the hybrid system and the transmission, enabling improved driving fuel efficiency. When the truck is stationary, Odyne’s hybrid system and ePTO can power most equipment for the entire work day with the engine off. The Odyne plug-in hybrid drive system reduces fleet operating and maintenance costs, and depending on duty cycle, enables large trucks to obtain fuel economy improvements of up to 50% compared to traditional diesel or gasoline engines. Odyne continues to be the only plug-in hybrid system on a medium- or heavy-duty truck to deliver greater fuel efficiency both while driving and at the work site.

In 2013, Odyne Systems was selected to participate in a $45.4 million U.S. Department of Energy (DOE) award to develop and deploy plug-in hybrid systems for over 120 trucks for companies and governmental entities throughout North America.

About Odyne Systems, LLC

Odyne is a leader in hybrid drive systems for medium and heavy-duty vehicles. Odyne’s advanced plug-in hybrid technology enables trucks over 14,000 pounds to have substantially lower fuel consumption, lower emissions, improved performance, quieter job site operation and reduced operating and maintenance costs. Odyne has fielded more plug-in hybrid systems for large trucks throughout the United States than any other supplier. Odyne systems are modular and are integrated to powertrains during the new vehicle manufacturing process or are retrofit to existing truck chassis in various applications. The systems are sold and serviced through a worldwide distribution network including Altec, DUECO and Terex Utilities. Odyne has also authorized selected Allison Transmission distributors to service Odyne systems across North America. For further information, visit us at www.odyne.com and follow us on Twitter @Odyne.

About Allison TransmissionAllison Transmission (NYSE: ALSN) is the world’s largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles, and is a leader in hybrid-propulsion systems for city buses. Allison transmissions are used in a variety of applications including refuse, construction, fire, distribution, bus, motorhomes, defense and energy. Founded in 1915, the company is headquartered in Indianapolis, Indiana, USA and employs approximately 2,700 people worldwide. With a market presence in more than 80 countries, Allison has regional headquarters in the Netherlands, China and Brazil with manufacturing facilities in the U.S., Hungary and India. Allison also has approximately 1,400 independent distributor and dealer locations worldwide. For more information, visit www.allisontransmission.com.

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Odyne is a leader in hybrid drive systems for medium- and heavy-duty vehicles. Odyne’s advancedplug-in hybrid technology enables trucks over 14,000 pounds to have substantially lower fuelconsumption, lower emissions, improved performance, quieter work site operation and reducedoperating and maintenance costs. Odyne has produced more plug-in hybrid systems for large trucksthan any other supplier in the U.S. The company sells its unique modular hybrid system for new andretrofit applications direct to truck manufacturers and through a global distribution and servicenetwork. The name Odyne represents the combination of “O” for Optimal and “dyne” for Force.Odyne’s hybrid system for medium- and heavy-duty trucks represents the best hybrid power solutionfor large trucks. For further information, visit us at www.odyne.com and follow us on Twitter @Odyne.About Allison TransmissionAllison Transmission is the world’s largest manufacturer of fully-automatic transmissions for mediumandheavy-duty commercial vehicles, medium- and heavy-tactical U.S. military vehicles and hybridpropulsionsystems for transit buses. Allison transmissions are used in a variety of applicationsincluding on-highway trucks (distribution, refuse, construction, fire and emergency), buses (primarilyschool and transit), motor homes, off-highway vehicles and equipment (primarily energy and mining)and defense vehicles (wheeled and tracked). Founded in 1915, the Allison business is headquarteredin Indianapolis, Indiana, U.S.A. and employs approximately 2,800 people. Allison has manufacturingfacilities and customization centers located in China, The Netherlands, Brazil, India and Hungary.With a global presence, serving customers in North America, Europe, Asia, Australia, South America,and Africa, Allison also has approximately 1,400 independent distributor and dealer locationsworldwide. More information about Allison is available at www.allisontransmission.com.